Improvement in grain-separators



T. J. HUBBELL.

Grain-Separator.

No.159,414 I 'PatentedFeb.2, 1875.

UNITED STATES PATENT Orrron THOMAS J. HUBBELL, OF YOUNTVILLE,CALIFORNIA, ASSIGNOR TO JONATHAN BATEMAN AND THOMAS J. HUBBELL.

IMPROVEMENT IN GRAlN-SEPARATORS.

Specification forming part of Letters Patent No. 159,414, dated February2, 1875; application filed September 15, 1874.

To all whom it may concern:

Be it known that I, THOMAS J HUBBELL, of Yountville, county of Napa and-State of California, have invented an Improved Grain-SeparatingAttachment to Thrashing Machines; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the accompanying drawings, and to the letters markedthereon.

My invention relates to certain improvements in devices for cleaninggrain; and it consists in the employment of a peculiarly-v shaped riddleand screen, together with a crank and operating pitmau, by which thescreens are moved in unison.

' Any unthrashed heads which may fall upon the riddle will be carriedover and. fall upon a carrying-belt, to be returned to thethrashing-cyliuder.

Referring to the drawings for a more complete explanation of myinvention, Figure 1 is a side elevation and partial section. Fig. 2 is aplan or top view.

A A are the sides of a separator-shoe, between which the riddles move.The lower riddle-frame B lies upon an incline, while the upper one, 0,has one end suspended by the links or straps D, while the other onemoves upon the supports E. These supports are secured to the sides of.the machine by means of bolts passing through slots F, and secured atany point by nuts G. A shaft, H, extends across the machine between theriddles, and

has a crank, I, within its length. The connecting-rod or pitmau Jextends from this crank to the end of the lower screen, while the pitmanK gives motion to the riddle-frame 0. By this construction the two havea simultaneous movement, that of the lower one being a sliding motion,approaching the upper one and receding from it as it moves, while theupper one has a sort of combined swinging and sliding movement, whichloosens up the grain and keeps it agitated all the time. In order tomore completely effect this I make the upper riddle convex, so that itwill overcome all tendency to settle in the middle. Any unthrashed headswill be carried over and fall upon the conveyer L, which transfers themto an elevator, by which they are returned to the thrashing-cylinder.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The combination of the riddle-frames B and G, the intermediate pitmen JK, operated by the same crank I in such manner as to move the screens inthe same direction simultaneously.

In witness whereof I hereunto set my hand and seal.

THOMAS J. HUBBELL.

Witnesses:

JOHN D. LITTLE, J. H. Porrs.

